Health After a person exercises for a few minutes, the velocity v (in liters per second) of airflow into and out of the lungs during a respiratory cycle is given by
(a) Find the time for one full respiratory cycle.
(b) Find the number of cycles per minute.
(c) Find the velocities of airflow when t = 2 and t = 3 without using a calculator.
(d) Use a graphing utility to find the velocity of airflow when t = 1.5.
(e) Use a graphing utility to graph the velocity function.
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